pope benedict xvi. today's blessing comes as the vatican considers moving up the date to find his replacement. we're live in st. peter's square. >>> and the drama surrounding former senator chuck hagel, the president's choice for defense secretary. his nomination in limbo, were even though many suspect he will eventually be confirmed. why are they making this process so difficult? we'll talk to david gregory and get analysis 06 that. >>> plus, have you ever wondered what it's like to train as a g man? >> i have wondered 245. >> well, you're sitting next to the right guy. i was in quantico, virginia. they deal with a car stop, hand-to-hand combat. and what we learned about fighting crime and you were brushing up on your car knowledge. >> i was. i was doing a little bit of that. we hear women don't know what much about cars. we get a bad rap. one woman who knows a lot about cars wants to change that perception. i spent a day changing oil. as part of a unique class designed for women by a woman. its goal i